A model to predict the air permeability of a multilayer woven fabric system from the air permeability and construction parameters of a single fabric has been developed. A new factor to account for the distortion of the threads in the fabric due to the flow of air through the layers of the fabric is proposed. This model incorporates the fabric cover factor (determined using an image‐processing method) and the proposed distortion factor (determined based on yarn linear density and fabric structure). The performance of the proposed model has been successfully validated by using it to predict the air permeability of other multilayer woven fabric systems and comparing it to experimentally determined values. The model can thus be used as a valuable tool in the engineering design of multilayer woven structures with desired air permeability performance requirements.
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Sundaramoorthy et al. (2011) studied this question.
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